Anti-overturning structure and folding shopping cart
By introducing an anti-tipping structure into the folding shopping cart and utilizing the design of blocking grooves and limiting parts, the problem of the side panels flipping under vibration conditions is solved, thus achieving stable unfolding and use of the shopping cart.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-10
AI Technical Summary
The side panels of existing folding shopping carts are prone to tipping over under vibration, leading to instability in use.
The anti-tumble structure includes a first plate, a second plate, and a rotation limiter. The plate is locked and unlocked by the cooperation of the blocking groove, the rotation limiter plate, and the limiter, which enhances stability.
It improves the stability of the shopping cart side panels after they are unfolded, preventing them from tipping over due to vibration or gravity, and enhancing the safety and reliability of use.
Smart Images
Figure CN223982535U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to shopping cart technical field, specifically, it relates to a kind of anti-overturning structure and folding shopping cart. BACKGROUND
[0002] At present, the two side plates of folding shopping cart are respectively hinged by two plates, so that the volume of folding shopping cart is small after folding. When the folding shopping cart is in the open state, the two plates of the folding shopping cart side plate are in the unfolded state, but the two plates are easy to overturn and fold after unfolding, which affects the normal use of the shopping cart.
[0003] In the related art, a rotating shaft is provided on the outer side wall of one of the plates, and a rotating plate is sleeved and rotatably installed on the rotating shaft. The rotating plate and the rotating shaft have a small damping force. When the two plates are in the unfolded state, the rotating plate is rotated by being actuated, so that the end of the rotating plate away from the rotating shaft is located within the range of the other plate and abuts against the other plate. At the same time, the rotating plate will stop rotating by the damping force of the rotating shaft, so that the two side plates are not easy to overturn and fold.
[0004] However, the rotating plate is not firmly limited by the small damping force between the rotating plate and the rotating shaft. When the shopping cart is pulled on a rough asphalt road, the shopping cart receives a large vibration, and the rotating plate will rotate by overcoming the damping force between the rotating plate and the rotating shaft under the action of the vibration, so that the rotating plate loses the function of limiting the overturning of the two plates, and the side plates of the shopping cart are easy to overturn. SUMMARY
[0005] To solve at least one of the above problems, the utility model first provides an anti-overturning structure, which comprises a first plate body, a second plate body and a rotating limiting member. One end of the first plate body is hingedly connected to one end of the second plate body. The rotating limiting member is rotatably arranged on the first plate body. The rotating limiting member is adapted to lock or unlock the first plate body and the second plate body when they are fully unfolded. The rotating limiting member, the first plate body or the second plate body is provided with a limiting portion, and the limiting portion is adapted to limit the rotation of the rotating limiting member in the locked state.
[0006] Optionally, one side of the first plate body provided with the rotating limiting member is provided with a blocking groove, and the blocking groove penetrates through one side of the first plate body close to the hinged end of the first plate body. The second plate body is provided with a rotating limiting plate. When the first plate body and the second plate body are in the fully unfolded state, the rotating limiting plate is located in the blocking groove.
[0007] Optionally, when the rotating limiting member is in the locked state, the rotating limiting member is located on the side of the rotating limiting plate away from the groove bottom of the blocking groove.
[0008] Optionally, the first plate body is provided with a groove on one side of the blocking groove, the groove is located on one side of the blocking groove, the limiting part is provided on the rotating limiting member, and the limiting part is inserted into the groove after passing through the rotating limiting plate.
[0009] Optionally, the first plate body is provided with an installation groove, the rotating limiting member is rotatably disposed in the installation groove, a portion of the rotating limiting member protrudes from the installation groove and cooperates with the rotating limiting plate, the portion of the rotating limiting member protruding from the installation groove is provided with a blocking post, the blocking post is inserted into the installation groove, and when the limiting part is inserted into the groove, the blocking post abuts against the groove wall of the installation groove near the blocking groove side.
[0010] Optionally, the rotating limiting member has an arc groove on the side near the rotating limiting plate, and the rotating limiting plate has an arc strip on the side near the rotating limiting member. When the rotating limiting member is in the locked state, the arc strip is inserted into the arc groove, and the arc strip abuts against the groove wall of the arc groove on the side near the second plate.
[0011] Optionally, one end of the arc groove passes through the rotation limiting member to allow the arc strip to be inserted, while the other end of the arc groove does not pass through the rotation limiting member.
[0012] Optionally, the first plate is fixedly provided with a rotating shaft, the rotating limiting member is provided with a rotating hole, the rotating shaft is inserted into the rotating hole and passes through the rotating limiting member, the end of the rotating shaft away from the first plate is provided with a limiting flange, and the inner diameter of the rotating hole is smaller than the outer diameter of the limiting flange.
[0013] Optionally, the outer wall of the rotating shaft is provided with a deformation groove, the deformation groove penetrates the rotating shaft radially, and the deformation groove penetrates the end of the rotating shaft away from the first plate.
[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0015] 1. When the first plate and the second plate are fully unfolded, the rotating limiting plate is inserted into the blocking groove to prevent the second plate from continuing to rotate relative to the first plate, thus forming a limit. Then, the rotating limiting member is rotated to the locked state, limiting the rotating limiting plate in the blocking groove to prevent the rotating limiting plate from rotating out of the blocking groove. At this time, the rotation of the rotating limiting member is limited by the limiting part and is not easy to rotate. This makes the rotating limiting member more stable when it is in the locked state and less likely to rotate due to vibration. This unlocks the state and makes it less likely for the first plate and the second plate to flip and fold, thus improving the stability of the first plate and the second plate after unfolding.
[0016] 2. When the rotating limiter changes from the unlocked state to the locked state, the limiter part will fit tightly against the rotating limiter plate and pass through the rotating limiter plate with interference fit before being inserted into the groove to achieve a snap-fit. At the same time, the blocking post abuts against the groove wall of the mounting groove, so that the rotation of the rotating limiter part is limited in both directions, which improves the stability of the rotating limiter part after locking the first plate and the second plate. In addition, the blocking post abuts against the groove wall of the mounting groove and also serves as a positioning indicator, indicating to the operator that the limiter part has been inserted into the groove.
[0017] 3. When the first plate and the second plate are subjected to folding force, the arc strip is inserted into the arc groove to form a hook-like structure. The arc strip abuts against the groove wall on the side of the arc groove near the second plate, making it more difficult for the rotation limiting plate to come out of the blocking groove, and further improving the stability of the rotation limiting component after locking the first plate and the second plate.
[0018] In addition, this utility model provides a folding shopping cart, including the anti-tipping structure described above.
[0019] Compared with the prior art, the folding shopping cart described in this utility model has the same advantages as the anti-flip structure mentioned above, which will not be repeated here. Attached Figure Description
[0020] Figure 1 This is a structural diagram showing the fit between the first plate, the second plate, and the rotation limiting member in an embodiment of this utility model.
[0021] Figure 2 This is an exploded view of the first plate, the second plate, and the rotation limiting member in an embodiment of this utility model;
[0022] Figure 3 This is an exploded view of the first plate and the rotation limiting member in an embodiment of this utility model;
[0023] Figure 4 This is a partial enlarged view of the rotating limiting member in the locked state in the embodiment of this utility model;
[0024] Figure 5 This is a structural diagram of the rotating limiting component in an embodiment of this utility model.
[0025] Explanation of reference numerals in the attached drawings: 1. First plate; 11. Blocking groove; 12. Mounting groove; 13. Rotating shaft; 131. Deformation groove; 14. Groove; 2. Second plate; 21. Rotation limiting plate; 22. Arc-shaped strip; 3. Rotation limiting component; 31. Rotating plate; 32. Extension plate; 33. Locking plate; 34. Limiting part; 35. Blocking post; 36. Arc groove. Detailed Implementation
[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-5 This application will be described in further detail.
[0027] In a first aspect, this utility model embodiment provides an anti-tumble structure, referring to... Figure 1 The anti-flip structure includes a first plate 1, a second plate 2, and a rotation limiting member 3. One end of the first plate 1 and one end of the second plate 2 are hinged together by a hinge shaft. The second plate 2 can rotate 180 degrees relative to the first plate 1, thereby allowing the first plate 1 and the second plate 2 to be folded or unfolded. The rotation limiting member 3 is rotatably mounted on the first plate 1. The rotation limiting member 3 is suitable for locking or unlocking the first plate 1 and the second plate 2 when they are fully unfolded. When the rotation limiting member 3 is in the locked state for flipping the first plate 1 and the second plate 2, the rotation of the rotation limiting member 3 will be limited, making it difficult for the rotation limiting member 3 to rotate and unlock, thus preventing the first plate 1 and the second plate 2 from flipping after unfolding.
[0028] Reference Figure 2 and Figure 3 Let the end where the first plate 1 is hinged to the second plate 2 be the hinge end of the first plate 1; let the end where the second plate 2 is hinged to the first plate 1 be the hinge end of the second plate 2. The first plate 1 has a blocking groove 11 on one side where the rotation limiting member 3 is located, and the blocking groove 11 extends through the first plate 1 near the hinge end. The second plate 2 has a rotation limiting plate 21 integrally formed at its hinge end.
[0029] When the first plate 1 and the second plate 2 are fully unfolded and the rotation limiting member 3 is locked, the rotation limiting plate 21 is located within the blocking groove 11 and abuts against the bottom of the blocking groove 11. The rotation limiting member 3 is located on the side of the rotation limiting plate 21 away from the bottom of the blocking groove 11, so that the first plate 1 and the second plate 2 are limited and cannot continue to rotate in the unfolding direction after being fully unfolded. After the rotation limiting member 3 rotates, it can limit the rotation limiting plate 21 within the blocking groove 11, making it difficult for the first plate 1 and the second plate 2 to rotate and fold. In another embodiment, the rotation limiting member 3 can be rotatably disposed on the second plate 2; correspondingly, the blocking groove 11 is disposed on the second plate 2, and the rotation limiting plate 21 is disposed on the first plate 1.
[0030] Reference Figure 2 and Figure 3The rotating limiting member 3 includes a rotating plate 31, an extension plate 32, and a locking plate 33. The rotating plate 31 is rotatably connected to the first plate 1. The extension plate 32 is located on the side of the rotating plate 31 away from the first plate 1 and is integrally formed with the rotating plate 31. The locking plate 33 is located on the side of the extension plate 32 away from the rotating plate 31 and is integrally formed with the extension plate 32. The locking plate 33 extends towards the outer peripheral wall of the rotating plate 31 and is suspended. Thus, after the locking plate 33 rotates, it can be located on the side of the rotating limiting plate 21 away from the bottom of the blocking groove 11, thus limiting the rotating limiting plate 21 within the blocking groove 11.
[0031] Combination Figure 2 Reference Figure 3 and Figure 4 More specifically, the first plate 1 has a mounting groove 12 on one side where the rotation limiting member 3 is located. The bottom of the mounting groove 12 is integrally formed with a rotating shaft 13. The rotating plate 31 has a rotating hole, and the rotating shaft 13 is inserted into the rotating hole and passes through the rotating plate 31. The rotating plate 31 rotates on the rotating shaft 13. The end of the rotating shaft 13 away from the first plate 1 has a limiting flange. The inner diameter of the rotating hole is smaller than the outer diameter of the limiting flange, so that the rotating plate 31 is not easily pulled off the rotating shaft 13 along the axial direction of the rotating shaft 13. The outer wall of the rotating shaft 13 is provided with a deformation groove 131. The deformation groove 131 penetrates the rotating shaft 13 radially. At the same time, the deformation groove 131 penetrates the end of the rotating shaft 13 away from the first plate 1. Correspondingly, the flange will also be penetrated and divided into two. In this way, when the rotating plate 31 is sleeved on the rotating shaft 13, the flange will be squeezed by the hole wall of the rotating hole, which will drive the two halves of the rotating shaft 13 to move towards the deformation groove 131 to generate deformation, so that the flange can pass through the rotating hole.
[0032] The locking plate 33 protrudes from the mounting groove 12. The side of the locking plate 33 closest to the extension plate 32 is located on the side of the rotation limiting plate 21 away from the blocking groove 11. The locking plate 33 can lock or unlock the rotation limiting plate 21 by rotating.
[0033] Combination Figure 2 Reference Figure 3 and Figure 5 The locking plate 33 has a limiting part 34 integrally formed on the side near the extension plate 32. In this embodiment, the limiting part 34 is preferably a protrusion. The first plate 1 also has a groove 14 on the side where the blocking groove 11 is provided. The groove 14 and the blocking groove 11 are arranged adjacent to each other. After the locking plate 33 rotates, the limiting part 34 can be inserted into the groove 14. At this time, the locking plate 33 limits the rotation limiting plate 21 to the blocking groove 11, making it difficult for the first plate 1 and the second plate 2 to rotate in the folding direction. In another embodiment, the limiting part 34 can be a ball plunger installed on the locking plate 33.
[0034] When the locking plate 33 rotates, the limiting part 34 will be interference-fitted with the rotating limiting plate 21 and inserted into the groove 14 after passing through the rotating limiting plate 21. In other embodiments, the limiting part 34 may also be provided on the first body or the second plate 2, and a corresponding slot is provided on the locking plate 33. When the locking plate 33 is locked to the rotating limiting plate 21, the limiting part 34 is engaged in the slot, thereby limiting the rotation of the rotating limiting member 3.
[0035] Combination Figure 2 Reference Figure 4 and Figure 5 The locking plate 33 has an integrally formed blocking post 35 on one side of the limiting part 34. The blocking post 35 is spaced apart from the limiting part 34, and the length of the blocking post 35 is greater than the length of the limiting part 34. The blocking post 35 is inserted into the mounting groove 12. When the limiting part 34 is inserted into the groove 14, the blocking post 35 abuts against the groove wall of the mounting groove 12 near the blocking groove 11. At this time, the forward and reverse rotation of the entire rotating limiting member 3 is limited, making the rotating limiting member 3 more stable when it is in the locked state.
[0036] The locking plate 33 has an arc groove 36 on the side near the rotation limiting plate 21, and the rotation limiting plate 21 has an arc strip 22 on the side near the rotation limiting member 3. When the rotation limiting member 3 is locked, the arc strip 22 is inserted into the arc groove 36, and the arc strip 22 abuts against the groove wall of the arc groove 36 near the second plate 2. One end of the arc groove 36 along the rotation direction of the locking plate 33 passes through the rotation limiting member 3 to allow the arc strip 22 to be inserted, while the other end of the arc groove 36 does not pass through the rotation limiting member 3, so that the arc strip 22, after being inserted into the arc groove 36, can limit the rotation of the locking plate 33. When the first plate 1 and the second plate 2 are subjected to a folding force, the arc strip 22, after being inserted into the arc groove 36, forms a hook-like structure, and the arc strip 22 abuts against the groove wall of the arc groove 36 near the second plate 2, making it more difficult for the rotation limiting plate 21 to detach from the blocking groove 11.
[0037] The implementation principle of the anti-flipping structure in this application embodiment is as follows: when the first plate 1 and the second plate 2 are in a fully unfolded state, the rotation limiting plate 21 is inserted into the blocking groove 11 to prevent the second plate 2 from continuing to rotate relative to the first plate 1, thus forming a limit.
[0038] Then, the rotating limiting member 3 is rotated, and the limiting part 34 is inserted into the groove 14 after passing through the rotating limiting plate 21 with interference. At this time, the blocking post 35 abuts against the groove wall of the mounting groove 12, so that the rotation of the rotating limiting member 3 in both directions is limited, thereby limiting and locking the rotating limiting plate 21 in the blocking groove 11. At the same time, the arc strip 22 is inserted into the arc groove 36 to form a hook-like structure, and the arc strip 22 abuts against the groove wall of the arc groove 36 on the side near the second plate 2. When the first plate 1 and the second plate 2 are subjected to folding force, the rotating limiting plate 21 is less likely to detach from the blocking groove 11, making it less likely for the first plate 1 and the second plate 2 to flip and fold, thus improving the stability of the first plate 1 and the second plate 2 after unfolding.
[0039] Secondly, another embodiment of this utility model provides a folding shopping cart equipped with the anti-tipping structure described in the first aspect. The first plate 1 and the second plate 2 are placed vertically. The rotation limiting member 3 needs to be rotated in the forward direction to allow the limiting part 34 to be inserted into the groove 14. Correspondingly, the rotation limiting member 3 needs to be rotated in the reverse direction to release the restriction on the rotation limiting plate 21. This arrangement prevents the rotation limiting member 3 from rotating on its own and releasing the restriction on the rotation limiting plate 21 due to gravity or vibration during use.
[0040] Similarly, the components included in the "components" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.
[0041] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0042] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0043] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0044] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0045] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.
[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.
Claims
1. A rollover prevention structure, characterized by: The utility model provides a foldable board, including first plate body (1), second plate body (2) and rotation limiting piece (3), one end of first plate body (1) and one end of second plate body (2) are hinged connection, rotation limiting piece (3) is rotated and is established in first plate body (1), rotation limiting piece (3) is suitable for locking or unlocking first plate body (1) and second plate body (2) after complete unfolding, rotation limiting piece (3) or first plate body (1) or second plate body (2) is equipped with limiting portion (34), limiting portion (34) is suitable for limiting the rotation of rotation limiting piece (3) in locked state.
2. The roll-over prevention arrangement of claim 1 wherein: The side of the first plate body (1) provided with the rotation limiting piece (3) is provided with a blocking groove (11), the blocking groove (11) penetrates through the first plate body (1) near the side of the hinged end of the first plate body (1), the second plate body (2) is provided with a rotation limiting plate (21), when the first plate body (1) and the second plate body (2) are in a fully unfolded state, the rotation limiting plate (21) is located in the blocking groove (11).
3. The roll-over prevention arrangement of claim 2, wherein: When the rotation limiting piece (3) is in a locked state, the rotation limiting piece (3) is located on the side of the rotation limiting plate (21) away from the groove bottom of the blocking groove (11).
4. The roll-over prevention arrangement of claim 3 wherein: The side of the first plate body (1) provided with the blocking groove (11) is further provided with a groove (14), the groove (14) is located on the side of the blocking groove (11), the limiting portion (34) is provided on the rotation limiting piece (3), the limiting portion (34) is inserted into the groove (14) after passing through the rotation limiting plate (21) with interference.
5. The roll-over prevention arrangement of claim 4 wherein: The first plate body (1) is provided with a mounting groove (12), the rotation limiting piece (3) is rotatably arranged in the mounting groove (12), a part of the rotation limiting piece (3) protrudes from the mounting groove (12) and cooperates with the rotation limiting plate (21), the part of the rotation limiting piece (3) protruding from the mounting groove (12) is provided with a blocking column (35), the blocking column (35) is inserted into the mounting groove (12), when the limiting portion (34) is inserted into the groove (14), the blocking column (35) abuts against the groove wall of the mounting groove (12) near the blocking groove (11).
6. The roll-over prevention arrangement of claim 2 wherein: The side of the rotation limiting piece (3) near the rotation limiting plate (21) is provided with an arc groove (36), the side of the rotation limiting plate (21) near the rotation limiting piece (3) is provided with an arc-shaped strip (22), when the rotation limiting piece (3) is in a locked state, the arc-shaped strip (22) is inserted into the arc groove (36), and the arc-shaped strip (22) abuts against the groove wall of the arc groove (36) near the second plate body (2).
7. The roll-over prevention arrangement of claim 6 wherein: One end of the arc groove (36) penetrates through the rotation limiting piece (3) to allow the arc-shaped strip (22) to be inserted, and the other end of the arc groove (36) does not penetrate through the rotation limiting piece (3).
8. The anti-inversion structure of claim 1, wherein: The first plate body (1) is fixedly provided with a rotating shaft (13), the rotating limiting piece (3) is provided with a rotating hole, the rotating shaft (13) is inserted into the rotating hole and penetrates through the rotating limiting piece (3), and the end, away from the first plate body (1), of the rotating shaft (13) is provided with a limiting flange.
9. The anti-inversion structure of claim 8, wherein: The outer wall of the rotating shaft (13) is provided with a deformation groove (131), the deformation groove (131) penetrates through the rotating shaft (13) along the radial direction of the rotating shaft (13), and the deformation groove (131) penetrates through the end, away from the first plate body (1), of the rotating shaft (13).
10. A foldable shopping cart, characterized by, A structure for preventing overturning as claimed in any one of claims 1-9.